JP2010083438A - Wiper mounting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wiper mounting structure securing strength against an input of excessive load during snow accumulation, etc., while securing pedestrian protection performance. <P>SOLUTION: The wiper mounting structure 10 includes a mounting member 50 provided on the motor 20 side of a wiper device 12, a mounted member 52 provided on a vehicle body 14 side and fitted with the mounting member 50, fastened members 44, 46 provided at a predetermined position other than the mounting member 50 of the wiper device 12 and having fastening holes 44A, 46A for mounting the wiper device 12 to the vehicle body 14, and fastening tools 40 inserted into the fastening holes 44A, 46A for fastening the fastened members 44, 46 to the vehicle body 14. A movable clearance between the mounting member 50 and the mounted member 52 in the vehicle-width direction is made smaller than a movable clearance between the fastening tools 40 and the fastened members 44, 46 in the vehicle-width direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a wiper mounting structure applied to a vehicle such as an automobile.

A wiper mounting structure applied to a vehicle such as an automobile has been conventionally known (see, for example, Patent Document 1). In such a wiper mounting structure, there is a structure in which a mounting bracket on the wiper device side is fitted into a highly rigid mount bracket provided on the vehicle body side from the vehicle width direction.
JP 2006-273200 A

  However, in such a structure, when snow or the like adheres to the windshield glass and the wiper arm is restrained when the wiper arm is turned over, an excessive load is input to the wiper device from the vehicle width direction. Can not be handled by the mounting bracket. For this reason, the fastening portion other than the mounting bracket will be responsible for the load.In this case, a highly rigid member is required for the fastening portion, which contradicts the requirements for pedestrian protection performance that requires weakening. End up.

  SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to obtain a wiper mounting structure capable of ensuring strength against an excessive load input during snowfall or the like while ensuring pedestrian protection performance.

  In order to achieve the above object, the wiper mounting structure according to claim 1 of the present invention is provided on the motor side of the wiper device and on the vehicle body side, and the mounting member is fitted therein. A to-be-attached member, a to-be-fastened member provided at a predetermined position other than the attaching member of the wiper device and having a fastening hole for attaching the wiper device to a vehicle body; and the fastened member inserted into the fastening hole. And a movable clearance in the vehicle width direction between the attachment member and the member to be attached is smaller than a movable clearance in the vehicle width direction between the fastener and the member to be fastened. It is characterized by that.

  According to the first aspect of the present invention, the movable clearance in the vehicle width direction between the mounting member and the mounted member is smaller than the movable clearance in the vehicle width direction between the fastener and the fastened member. An excessive load input to the wiper device from the vehicle width direction can be handled by a highly rigid mounted member. That is, it is possible to ensure the strength against an excessive load input during snowfall or the like. Therefore, it is not necessary to increase the rigidity of the fastening portion other than the attached member, and pedestrian protection performance that requires weakening can be ensured.

  According to a second aspect of the present invention, in the wiper mounting structure of the first aspect, the mounting member is fitted into the mounted member from above the vehicle body.

  According to the second aspect of the present invention, an excessive load input to the wiper device from the vehicle width direction can be satisfactorily handled by the highly rigid mounted member during snowfall or the like.

  Further, the wiper mounting structure according to claim 3 is the wiper mounting structure according to claim 1 or 2, wherein the support portion that supports the mounting member has a strength against a load from a vehicle body vertical direction. It is characterized by being weaker than the strength against the load from the direction.

  According to the third aspect of the present invention, the support portion that supports the mounting member can maintain the strength against the load input from the vehicle width direction, but against the load input from the vehicle body vertical direction. It becomes easy to break. Therefore, an excessive load (load) input to the wiper device from the vehicle width direction can be satisfactorily transmitted to the mounted member having high rigidity and the weak body against the load input from the vertical direction of the vehicle body during snow accumulation. The pedestrian protection performance that needs to be improved can be further secured.

  As described above, according to the present invention, it is possible to provide a wiper mounting structure that can ensure strength against an excessive load input during snowfall or the like while ensuring pedestrian protection performance.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS The best mode for carrying out the present invention will be described below in detail based on the embodiments shown in the drawings. FIG. 1 is a schematic plan view showing a wiper device 12 attached to a vehicle body 14 of an automobile, and FIG. 2 is a schematic plan view of the wiper device 12. 3 is a schematic perspective view showing the wiper mounting structure 10, FIG. 4 is a schematic plan view of the mounting bracket 50 (mounting member), and FIG. 5 is a schematic front view of the mounting bracket 52 (mounted member).

  6 is a schematic perspective view showing a configuration of fastening portions (fixing brackets 44 and 46 and bolts 40) for attaching the wiper device 12 to the vehicle body 14, and FIG. 7 is a perspective view of a shaft portion 48 that supports the mounting bracket 50. It is a schematic sectional drawing. In each figure, the arrow UP indicates the vehicle body upward direction, and the arrow FR indicates the vehicle body front direction.

  As shown in FIG. 1, the wiper device 12 is mounted in a cowl 16 of the vehicle body 14. As shown in FIG. 2, the wiper device 12 includes a wiper motor 20, and an output shaft 24 to which a rotational driving force is transmitted from the wiper motor 20 via a gear (not shown) in a gear box 22. Yes. The output shaft 24 protrudes toward the upper side of the vehicle body, and one end portion 26A of the crank arm 26 is fixedly connected to a tip portion on the upper side of the vehicle body.

  One end 30A of a link rod 30 is pivotally connected to the other end 26B of the crank arm 26 via a joint 28. The other end 30B of the link rod 30 is connected to the pivot lever 34 via a joint 32. It is pivotally connected to one end 34A. A pivot shaft 36 to which one end of a wiper arm (not shown) is attached is fixed to the other end 34B of the pivot lever 34.

  Therefore, the rotational driving force output from the wiper motor 20 is transmitted to the crank arm 26 via the output shaft 24, and the crank arm 26 rotates, whereby the link rod 30 swings back and forth substantially in the vehicle width direction. As a result, the pivot shaft 36 swings and rotates, and a wiper blade (not shown) provided at the other end of the wiper arm wipes the windshield glass 18 (see FIG. 1).

  A fixing bracket 44 as a member to be fastened for fixing the pivot shaft 36 side to the vehicle body 14 extends in the vehicle width direction on the pivot holder 38 in the wiper device 12, and the fixing bracket 44 is It attaches to the vehicle body 14 with the bolt 40 as a fastener shown in detail in FIG.

  That is, at one end portion (left end portion in FIG. 2) of the fixing bracket 44, as shown in FIG. 6, an inner diameter W1 larger than the diameter R1 of the bolt 40 is inserted to allow the bolt 40 to pass therethrough. A through hole 44A is formed as a fastening hole, and a washer 42 is inserted into the bolt 40 to prevent the head 40A from falling off the through hole 44A.

  Further, the wiper device 12 has a fixing bracket 46 as a fastened member for fixing the wiper motor 20 side to the vehicle body 14 attached to the front side of the vehicle body of the gear box 22. Similarly, it attaches to the vehicle body 14 with the bolt 40 as a fastener shown in detail in FIG.

  That is, as shown in FIG. 6, an inner diameter W1 larger than the diameter R1 of the bolt 40 is inserted into one end portion (right end portion in FIG. 2) of the fixed bracket 46 in order to insert the bolt 40. A through hole 46A is formed as a fastening hole, and a washer 42 is inserted into the bolt 40 so that the head 40A does not fall off the through hole 46A.

  As shown in FIGS. 3 and 4, the wiper device 12 includes a rubber mounting bracket 50 as a mounting member for mounting the wiper motor 20 side to the vehicle body 14 (the cowl 16). It is provided on the rear side. That is, the mounting bracket 50 is formed in a substantially roller shape that is pivotally supported (supported) by a shaft portion 48 (support portion) that protrudes from the gear box 22 toward the rear side of the vehicle body. A groove 50A having a predetermined depth is formed at the center.

  On the other hand, as shown in FIGS. 3 and 5, on the vehicle body 14 side, that is, the cowl 16, a mount bracket 52 as a member to be fitted into the groove portion 50 </ b> A of the mounting bracket 50 is attached by a fastener such as a bolt 54. ing. The mount bracket 52 is formed in a substantially “U” shape in a front view of FIG. 5, and has a fitting portion 52 </ b> A whose opening is directed to the vehicle body upper side, and is outward from the fitting portion 52 </ b> A. The side peripheral edge 52 </ b> B is attached to the cowl 16 by a plurality of bolts 54. Therefore, the mounting rigidity of the mount bracket 52 is high.

  Further, the insertion portion 52A is provided at a predetermined interval from the cowl 16 (an interval slightly larger than the plate thickness of the disc portion 50B on the vehicle body rear side than the groove portion 50A of the mounting bracket 50). The opening width W2 in the front view of 52A is formed to be larger than the diameter R2 of the groove portion 50A of the mounting bracket 50 shown in FIG. 4 and smaller than the diameter R3 of the disc portion 50B (R2 <W2 <R3).

  Therefore, the mounting bracket 50 is arranged from above the vehicle body so that the insertion portion 52A is inserted into the groove portion 50A while the disc portion 50B on the rear side of the vehicle body from the groove portion 50A is disposed between the cowl 16 and the mounting bracket 52. Thus, the mounting bracket 50 of the wiper device 12 is attached to the mounting bracket 52 of the vehicle body 14 (the cowl 16) (see FIG. 1).

  Further, the relationship between the diameter R2 of the groove 50A of the mounting bracket 50 and the opening width W2 of the fitting portion 52A of the mounting bracket 52, the diameter R1 of the bolt 40, and the inner diameter W1 of the through holes 44A and 46A of the fixing brackets 44 and 46, It is as follows. That is, (W2-R2) / 2 <(W1-R1) / 2 (the vehicle between the groove portion 50A and the fitting portion 52A rather than the movable clearance in the vehicle width direction between the bolt 40 and the through holes 44A, 46A). The movable clearance in the width direction is smaller).

  As a result, even when an excessive load is input from the wiper arm through the pivot shaft 36 to the wiper device 12 from the vehicle width direction, for example, during snowfall, the mount bracket 52 having high rigidity can handle the excessive load. It is possible to prevent an excessive load from being input to the fixing brackets 44 and 46 side. In other words, this configuration ensures the strength and durability of the wiper device 12.

  Further, as shown in FIG. 7, a cutout portion 48 </ b> A is formed on the vehicle body vertical direction side of the shaft portion 48 that supports the mounting bracket 50. As shown in FIG. 4, the notch 48 </ b> A is formed over the entire axial direction of the shaft portion 48, and the shaft portion 48 maintains a sufficient strength for a load input from the vehicle width direction. The vehicle is configured to be easily broken by a load input from the vehicle body vertical direction (so that the strength against the load from the vehicle vertical direction is lower than the strength against the load from the vehicle width direction).

  Therefore, as described above, when an excessive load is input to the wiper device 12 from the vehicle width direction, the load can be transmitted to the mount bracket 52 via the mounting bracket 50. When a pedestrian or the like collides with the vehicle (vehicle body 14) and an impact is applied to the wiper device 12 from above the vehicle body (a load is input), the shaft portion 48 is broken and the wiper device 12 Movement to the lower side of the vehicle body is allowed.

  That is, this is a configuration that can reduce the impact (load) received by a pedestrian or the like from the vehicle (vehicle body 14) when it collides with the vehicle (vehicle body 14). Note that the shape of the notch 48A is not limited to the shape shown in the figure, and maintains sufficient strength for the load input from the vehicle width direction, and is input from the vehicle body vertical direction (particularly the vehicle body upward direction). It may be formed in any shape as long as it is easily broken by a load.

  Next, the operation of the wiper mounting structure 10 having the above configuration will be described. When wiping off snow or the like accumulated on the windshield glass 18 of the vehicle body 14 with the wiper blade of the wiper device 12, when snow or the like is attached to the windshield glass 18, the wiper arm is turned upside down. The upper reversal position is indicated by T in FIG. 1 and its movement may be restricted. In this case, an excessive load is input to the wiper device 12 from the vehicle width direction.

  Here, as described above, the fitting portion 52A of the mount bracket 52 is open upward in the vehicle body, and the mounting bracket 50 (groove portion 50A) is fitted into the fitting portion 52A from above the vehicle body. The relationship between the diameter R2 of the groove 50A of the mounting bracket 50 and the opening width W2 of the fitting portion 52A of the mounting bracket 52, the diameter R1 of the bolt 40, and the inner diameter W1 of the through holes 44A and 46A of the fixing brackets 44 and 46 is as follows. (W2-R2) / 2 <(W1-R1) / 2.

  That is, the movable clearance in the vehicle width direction between the groove 50A and the fitting portion 52A is smaller than the movable clearance in the vehicle width direction between the bolt 40 and the through holes 44A and 46A. Therefore, an excessive load input to the wiper device 12 from the vehicle width direction can be satisfactorily handled by the mounting bracket 52 having high rigidity (with sufficient durability) via the mounting bracket 50 (mounting bracket 52 It is possible to prevent excessive loads from being input to the fixing brackets 44 and 46 that are other fastening portions (via the bolts 40).

  Therefore, strength durability (rigidity) in the wiper device 12 can be secured, and there is no need to increase strength durability (rigidity) of the fixing brackets 44 and 46 which are fastening portions other than the mount bracket 52. In other words, when a pedestrian or the like collides with a vehicle (vehicle body 14), the pedestrian protection is weakened so that the collision load received from the vehicle body 14 can be reduced (relative to the load input from the vehicle body vertical direction). The wiper mounting structure 10 having performance can be obtained.

  In addition, a notch 48A is formed in the vehicle body vertical direction side of the shaft portion 48 that pivotally supports the mounting bracket 50 over the entire axial direction. Therefore, the strength (rigidity) can be maintained with respect to the load input from the vehicle width direction, and the excessive load as described above can be transmitted to the mount bracket 52 via the mounting bracket 50.

  When a pedestrian or the like collides with the vehicle (vehicle body 14) and the collision load is input to the wiper device 12 (shaft portion 48) from the upper side of the vehicle body, the shaft portion 48 is broken and the wiper device 12 is It can move to the vehicle body lower side. Therefore, the collision load that a pedestrian or the like receives from the vehicle (vehicle body 14) can be further reduced.

  Thus, the wiper mounting structure 10 according to the present embodiment needs to be weakened while ensuring the rigidity of mounting the wiper device 12 to the vehicle body 14, that is, the strength durability including wiping and chattering. The anti-pedestrian protection performance can be ensured, and the contradictory performance can be achieved.

  The wiper mounting structure 10 according to the present embodiment has been described based on the examples shown in the drawings. However, the wiper mounting structure 10 according to the present embodiment is not limited to the above examples, and The design can be changed as appropriate without departing from the scope of the invention. For example, as long as the wiper device 12 has a mounting bracket 50 to be fitted into the mount bracket 52, a device other than the illustrated type can be applied.

Schematic plan view showing a wiper device attached to the body of an automobile Schematic plan view of wiper device Schematic perspective view showing wiper mounting structure Schematic plan view of mounting bracket (mounting member) Schematic front view of mount bracket (attached member) The schematic perspective view which shows the structure of the fastening part for attaching a wiper apparatus to a vehicle body Schematic cross-sectional view of the shaft that supports the mounting bracket (mounting member)

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Wiper mounting structure 12 Wiper apparatus 14 Car body 20 Wiper motor 30 Link rod 36 Pivot shaft 40 Bolt (fastener)
44 Fixing bracket (fastened member)
44A Through hole (fastening hole)
46 Fixing bracket (fastened member)
46A Through hole (fastening hole)
48 Shaft (support)
48A Notch 50 Mounting bracket (Mounting member)
50A Groove 50B Disc 52 Mount bracket (attached member)
52A insertion part

Claims (3)

An attachment member provided on the motor side of the wiper device;
A mounted member provided on the vehicle body side into which the mounting member is inserted;
A member to be fastened provided at a predetermined position other than the attachment member of the wiper device, and having a fastening hole for attaching the wiper device to a vehicle body;
A fastener that is inserted into the fastening hole and fastens the fastened member to the vehicle body;
With
A wiper mounting structure, wherein a movable clearance in the vehicle width direction between the mounting member and the mounted member is smaller than a movable clearance in the vehicle width direction between the fastener and the fastened member.   The wiper mounting structure according to claim 1, wherein the mounting member is fitted into the mounted member from above the vehicle body.   3. The wiper mounting structure according to claim 1, wherein the support portion that supports the mounting member has a weaker strength against a load from a vehicle body vertical direction than a strength against a load from a vehicle width direction.

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